Solved

DNS returning incorrect information when client uses PPTP from remote locations

Posted on 2008-10-24
5
450 Views
Last Modified: 2012-06-21
I have mobile users who are having issues when connecting from home. They can connect to the network however when they attempt to access anything by its friendly name the application or shared drive is unable to connect. For example Outlook can not connect to the exchange server, or remote desktops will not connect to a server, but if I attempt to connect by IP there is no issue. If I open a command prompt and ping a server using its IP I get a correct reply, however if I use the name of the server I get a reply from an IP address that is not for that server. No matter which server I ping I get the same IP address reply 63.226.162.129. If I hibernate the workstation and bring it in to the office and repeat the ping the correct IP is returned. I have taken multiple workstations to a remote location that has the issue and they all return the same IP of 63.266.162.129. I tried this with different builds from know good images that predate the issue to heavily used ones. This is happening at multiple remote locations.  
0
Comment
Question by:knada242
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
5 Comments
 
LVL 4

Expert Comment

by:Scott1201
ID: 22800189
Sounds like the DNS server information for the internal network isn't being transmitted to the remote clients.  Can you compare the DNS server settings for a VPN client to the settings for a client in the office and see if there are differences?  If you let us know what VPN software/hardware you're using, someone will probably be able to tell you how to add DNS server entries.
0
 
LVL 1

Author Comment

by:knada242
ID: 22800232
Hello Scott,

What would be the best way to compare them? I am using the built in remote connection that XP has, and a Watchgaurd firebox.
0
 
LVL 4

Expert Comment

by:Scott1201
ID: 22801099
Open a command prompt and run "ipconfig /all" for the VPN and local connections.
0
 
LVL 1

Accepted Solution

by:
knada242 earned 0 total points
ID: 22846167
After doing allot of digging and testing I found that the Provider (Qwest) had implemented a new web helper feature for there internet consumers. When an application requests resources from a server using the host name the ISP would reply with an IP address for this web helper service instead of the actual IP for the server. Check it out the IP address is 63.226.162.129. Apparently it is a new service and there is a way for the client to opt out.
0
 

Expert Comment

by:speedy2k
ID: 23310453
http://www.qwest.net/web.help/

Click the "Can I opt out of the service?" link.
0

Featured Post

NEW Veeam Agent for Microsoft Windows

Backup and recover physical and cloud-based servers and workstations, as well as endpoint devices that belong to remote users. Avoid downtime and data loss quickly and easily for Windows-based physical or public cloud-based workloads!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Occasionally you run into the website or two that will not resolve properly using your own DNS servers.  Some people simply set up global forwarders for their DNS server.  I don’t recommend doing this because it can cause problems resolving addresse…
How to set-up an On Demand, IPSec, Site to SIte, VPN from a Draytek Vigor Router to a Cyberoam UTM Appliance. A concise guide to the settings required on both devices
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
Two types of users will appreciate AOMEI Backupper Pro: 1 - Those with PCIe drives (and haven't found cloning software that works on them). 2 - Those who want a fast clone of their boot drive (no re-boots needed) and it can clone your drive wh…

691 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question